its stupid that you can't return formula

lu
its stupid that you cant return formula even with a receip.. i went to safeway today and bought the small can of similac formula for $18 dollars and found another store that had formula for $15.74 so i bought it thinking that i could return the one i bought in safeway but NO of course they didnt take it back...and ended up with 2 cans... sick mfs cant even keep a single price on baby formula . shitheads